NECESSITY,
FUNCTION, AND CONFORMITY: KRS 257.030 authorizes the board to establish
necessary quarantines and other measures to control the movement of livestock
into, through, or within Kentucky. This administrative regulation establishes
restrictions to protect the thoroughbred industry from the spread of equine
viral arteritis in Kentucky and to control the disease in Kentucky.

Section 1.
Definitions. As used in this administrative regulation unless the context
clearly requires otherwise:

(1)
"Book" or "booking" means the contracting or scheduling of
a mare to breed to a stallion.

(5)
"EVA" means equine viral arteritis which is a communicable disease in
equine.

(6) "Sero
negative" means a horse has reacted negatively to a blood test for EVA.

(7) "Sero
positive" means a horse has demonstrated a positive reaction in serum
neutralization with a titer of greater than one (1) to four (4) to a blood test
for EVA.

(8)
"Shedder" or "shedding" means an equine has been determined
to have EAV in its body and is capable of transmitting the EAV to other equine.

(9)
"Vaccinated" or "vaccination" means an equine has been vaccinated
with an approved EVA modified live virus vaccine and the vaccination status has
been kept current in accordance with the manufacturer's recommendations.

Section 2. EVA
Shedding Stallions. A thoroughbred stallion known to be shedding EAV shall not
be permitted to breed until the chief livestock health official determines that
the stallion does not pose a threat of transmitting EAV. In making this
determination, the chief livestock health official shall consider whether the
requirements of subsections (2) and (3) of this section will be complied with
by the farm on which the shedding stallion is located. The following
restrictions shall apply to a shedding stallion that is permitted to breed:

(1) An owner
or agent of a mare booking or seeking to book a mare to a shedding stallion
shall be notified in writing by the owner or agent that the stallion is
classified as an EVA shedder. A written copy of the booking confirmation shall
be sent to the chief livestock health official.

(2) A shedding
stallion shall be housed, handled and bred in a facility isolated from a
nonshedding stallion.

(3) A shedding
stallion shall be bred to a mare that:

(a) Has been
vaccinated against EVA at least twenty-one (21) days prior to breeding; or

(b)
Demonstrates an EVA titer from vaccination or exposure to EAV, if the
serological EVA test to determine the mare is EVA sero positive was conducted
no sooner than November 1 of the previous calendar year for the following
breeding season.

Section 3.
Sero Positive Nonshedding Stallions. (1) The following restrictions shall apply
to a nonshedding stallion that was previously classified as a shedding
stallion:

(a) During the
first breeding season following the stallion's classification as a nonshedder,
the first five (5) sero negative mares covered by the stallion shall have a
blood sample collected for an EVA test twenty-eight (28) days after breeding.

(b) During the
second breeding season, the stallion shall be bred to two (2) mares negative
for EAV antibodies or have its semen collected and cultured for EAV. If the
culture report and blood samples are negative for EAV, there shall not be
restrictions placed on a future breeding season.

(2) A sero
positive vaccinated (arvac) stallion that did not have an EVA negative test
prior to vaccination shall be eligible for breeding by complying with one (1)
of the following:

(a) Semen
shall be collected and cultured for EAV and culture shall be reported as
negative; or

(b) Prior to
entering the breeding shed, the stallion shall be bred to two (2) mares
negative for EAV antibodies. The two (2) mares shall have blood collected for
an EVA test twenty-eight (28) days after breeding. Test results shall be
reported as negative for EAV antibodies.

(3) A
nonvaccinated sero positive stallion shall include a vaccinated stallion that
does not have documentation of the vaccination or a stallion with unknown
exposure to EAV. A nonvaccinated sero position stallion shall be eligible for
breeding by complying with the following:

(a) Semen
shall be collected and cultured for EAV; or

(b) Prior to
entry into the breeding shed, the stallion shall be bred to two (2) mares
negative for EVA antibodies. The two (2) mares shall have blood collected for
an EVA test twenty-eight (28) days after breeding. Test results shall be
reported as negative for EVA antibodies.

(c) The first
two (2) sero negative mares covered by the stallion shall have a blood sample
collected for an EVA test twenty-eight (28) days after breeding.

(d) The
Kentucky State Veterinarian may monitor a sero negative mare covered by the
stallion during a breeding season by having a blood sample collected for an EVA
test twenty-eight (28) days after breeding.

(4) The
determination that a stallion is not a shedder shall be made based on a
scientific procedure approved by the state veterinarian. The procedures shall
be conducted in the presence of the chief livestock health officer or his
designee.

Section 4. EVA
Classification Category. (1) Category One Mares. Category One Mares shall
include mares bred to a shedding stallion for the first time.

(a) Category
One Mares shall be vaccinated a minimum of twenty-one (21) days prior to the
first cover by a shedding stallion and shall be isolated a minimum of
twenty-one (21) days after the first cover.

1. During
isolation, the Category One Mare shall be physically separated from other
equine in a separate isolation area approved by the chief livestock health
official or designated personnel.

2. After the
isolation period, a Category One Mare may move without restriction.

(b) A Category
One Mare that does not conceive after being bred to a shedding stallion and has
completed the twenty-one (21) day isolation period following the first cover
shall be reclassified as a Category Two Mare for the remainder of the breeding
season.

(2) Category
Two Mares. Category Two Mares:

(a) Shall
include a mare:

1. Bred to a
shedding stallion within the previous two (2) years; or

2. Previously
classified as a Category One Mare that has completed the twenty-one (21) day
isolation period; and

(b) May move
without restrictions after being covered by a shedding stallion.

(3) A mare
bred to a shedding stallion shall return to the farm of origin in a van or
other transport vehicle by herself with sero positive equine. Upon returning to
the farm of origin, the van or other transport vehicle and equipment used to
move the mare shall be immediately cleaned and disinfected.

(4) A mare
bred to a shedding stallion shall be bred to a shedding stallion during that
estrus cycle. A mare may be bred to a nonshedding EVA vaccinated stallion on
subsequent estrus cycles during the breeding season.

(5)(a) Except
as provided in paragraph (b) of this subsection, in cooperation with the
stallion's owner or manager, the chief livestock health official shall
determine that a stallion is not shedding EAV prior to the stallion being
permitted to breed.

(b) A stallion
shall be permitted to breed with an EVA sero negative test mare without the
determination required by paragraph (a) of this subsection.

Section 5. A
stallion or mare infected with EAV during the breeding season shall immediately
cease breeding and the chief livestock health official shall be immediately
notified. An owner or agent with a mare booked or bred to a stallion that
became infected with EAV during the breeding season shall be immediately
notified in writing by the stallion's owner or agent. A copy of the written
notification shall be sent to the chief livestock health official. A stallion
infected with EAV during the breeding season shall be classified as a shedder
and shall be handled accordingly. Following the stallion's classification as a
shedder, the chief livestock health official may reclassify the stallion as a
nonshedder in accordance with Section 3(4) of this administrative regulation.

Section 6.
Equine Vaccinated Against EVA. Equine vaccinated for the first time against EVA
shall have a blood sample collected for an EVA test prior to vaccination. A
certificate documenting the equine has been vaccinated shall be sent to the
chief livestock health official within seven (7) days of the vaccination date.
A vaccinated stallion shall not be exposed to an EVA affected animal and shall
not be used for breeding within twenty-eight (28) days after vaccination. A
thoroughbred stallion used for breeding in Kentucky shall be vaccinated
annually with an approved state federal EVA vaccine.

Section 7. A
nurse mare shall be:

(1) Sero
negative;

(2) Officially
vaccinated in accordance with Section 6 of this administrative regulation; or

(3) Isolated
from other equine on the farm.

Section 8. A
teaser shall be officially vaccinated against EVA.

Section 9. (1)
An EVA test mare shall be isolated from the other equine and under the
supervision of state personnel if the mare becomes:

(a) Affected
with EAV after breeding; or

(b) Sero
positive after breeding.

(2) An
isolated mare shall be eligible for release from isolation by the chief
livestock health official after: